Synthesis of sequestration resins for water treatment in light water reactors

(19)

(11)

EP 2 465 607 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	27.06.2012 Bulletin 2012/26

(43)	Date of publication A2:
	20.06.2012 Bulletin 2012/25

(21)	Application number: 11192900.6

(22)	Date of filing: 09.12.2011

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International Patent Classification (IPC):

B01J 39/04^(2006.01)
B01J 39/18^(2006.01)
C02F 101/00^(2006.01)

C02F 1/42^(2006.01)
B01J 45/00^(2006.01)
C02F 103/34^(2006.01)

(84)	Designated Contracting States:
	AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
	Designated Extension States:
	BA ME

(30)

Priority:

23.11.2011 US 201113303201
15.12.2010 US 42327710 P

(71)	Applicant: Electric Power Research Institute, Inc.
	Charlotte, NC 28262 (US)

(72)	Inventors:
	Yengoyan, Leon San Jose, CA 95120 (US) Frattini, Paul L. Los Altos, CA 94022 (US) Wells, Daniel Morgan San Mateo, CA 94402 (US)

(74)	Representative: Delaney, Jennifer
	Appleyard Lees 15 Clare Road Halifax, HX1 2HY Halifax, HX1 2HY (GB)

(54)	Synthesis of sequestration resins for water treatment in light water reactors

(57) An organic synthesis of materials to achieve removal of low molecular weight ionic species, such as transition metal ions including cobalt, iron, nickel, and zinc, from aqueous solutions. The synthesis includes the steps of providing a cation exchange resin, functionalizing the cation exchange resin using a chloride intermediate to form a sulfonyl chloride resin, and reacting a multi-amine based ligand with the sulfonyl chloride resin to form a sequestration resin. The synthesis further includes the steps of cooling the sequestration resin, washing and drying the sequestration resin, and removing any unconverted sulfonate sites from the sequestration resin.

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